Diarmait mac Mail na mBo

Diarmait mac Mail na mBo (995-7 February 1072), also known as Dermot Kinsella, was King of Leinster from 1042 to 1072 (succeeding Murchad mac Dunlainge and preceding Murchad mac Diarmata) and of Dublin from 1070 to 1072 (succeeding Murchad mac Diarmata and preceding Echmarcach mac Ragnaill).

Biography
Diarmait mac Mail na mBo (meaning "Dermot, Baldy of the Cattle") was born to the Irish Ceinnselaig (Kinsella) clan. Dermot became King of Leinster in 1042 and installed his son Murchad mac Diarmata as Knig of Dyflin, and he was able to make a bid for the high kingship due to his clan's immense power. However, he was killed in battle with Conchobar Ua Maelsechlainn at Navan, County Meath, Ireland in 1072. He was the ancestor of Dermot MacMurrough.